Kokomo is a city in and the county seat of Howard County, Indiana, United States. Kokomo is Indiana's 13th-largest city. It is the principal city of the Kokomo, Indiana Metropolitan Statistical Area, which includes all of Howard and Tipton counties. Kokomo's population was 46,113 at the 2000 census, and 45,468 at the 2010 census. On January 1, 2012, Kokomo successfully annexed more than on the south and west sides of the city, including Alto and Indian Heights, increasing the city's population to nearly 57,000 people.